Electrical surgical instrument with knife return
First Claim
1. An electrically operated surgical instrument, comprising:
- a handle having;
a power supply;
a drive assembly having;
an electrically powered motor;
a controller electrically connected to the power supply and to the motor and selectively operating the motor; and
a drive part selectively moved by the motor between a fully extended position and a fully retracted position upon actuation of the motor; and
a switch assembly operably connected to the motor to control a direction of rotation of the motor and operably connected to the controller to control power supplied to the motor;
a surgical end effector connected to the handle and having;
a pair of opposing compression surfaces, at least one of the pair of opposing compression surfaces being operable to move with respect to the other of the pair of opposing compression surfaces to apply a compressive force to tissue therebetween; and
a tissue-cutting assembly comprising;
a blade moving with the drive part to pass between the opposing compression surfaces over the course of a blade stroke and thereby cut tissue compressed between the pair of compression surfaces, the blade stroke being comprised of the drive part advancing the blade distally towards the tissue to an extended position of the blade and retreating the blade proximally to a retracted position of the blade; and
the switch assembly being operable to, upon advancement of the drive part to the fully extended position, cause the motor to automatically retreat the drive part to place the blade in the retracted position of the blade.
5 Assignments
0 Petitions
Accused Products
Abstract
Electrically operated surgical instrument, comprising a handle having a power supply; a drive assembly having an electrical motor, a controller electrically connected to the power supply and motor, and a drive part selectively moved by the motor between a fully extended position and a fully retracted position; and a control assembly operably connected to the motor to control a rotation of the motor; an end effector having a tissue-cutting assembly comprising: a blade connected to the drive part to move between opposing compression surfaces over the course of a blade stroke to cut tissue compressed between the compression surfaces, the blade stroke being comprised of the drive part advancing the blade towards the tissue to an extended position and retreating proximally to a retracted position, the control assembly being operable to selectively cause the motor to automatically retreat the drive part to place the blade in the retracted position.
601 Citations
15 Claims
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1. An electrically operated surgical instrument, comprising:
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a handle having; a power supply; a drive assembly having; an electrically powered motor; a controller electrically connected to the power supply and to the motor and selectively operating the motor; and a drive part selectively moved by the motor between a fully extended position and a fully retracted position upon actuation of the motor; and a switch assembly operably connected to the motor to control a direction of rotation of the motor and operably connected to the controller to control power supplied to the motor; a surgical end effector connected to the handle and having; a pair of opposing compression surfaces, at least one of the pair of opposing compression surfaces being operable to move with respect to the other of the pair of opposing compression surfaces to apply a compressive force to tissue therebetween; and a tissue-cutting assembly comprising; a blade moving with the drive part to pass between the opposing compression surfaces over the course of a blade stroke and thereby cut tissue compressed between the pair of compression surfaces, the blade stroke being comprised of the drive part advancing the blade distally towards the tissue to an extended position of the blade and retreating the blade proximally to a retracted position of the blade; and the switch assembly being operable to, upon advancement of the drive part to the fully extended position, cause the motor to automatically retreat the drive part to place the blade in the retracted position of the blade. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electrically operated surgical instrument, comprising:
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a handle having; a power supply; a drive assembly having; an electrically powered motor; a controller electrically connected to the power supply and to the motor and selectively operating the motor; and a drive part selectively moved by the motor between a fully extended position and a fully retracted position upon actuation of the motor; and a control assembly operably connected to the motor to control a direction of rotation of the motor and operably connected to the controller to control power supplied to the motor; a surgical end effector connected to the handle and having; a pair of opposing compression surfaces, at least one of the pair of opposing compression surfaces being operable to move with respect to the other of the pair of opposing compression surfaces to apply a compressive force to tissue therebetween; and a tissue-cutting assembly comprising; a blade connected to the drive part to pass between the opposing compression surfaces over the course of a blade stroke and thereby cut tissue compressed between the pair of compression surfaces, the blade stroke being comprised of the drive part advancing the blade distally towards the tissue to an extended position of the blade and retreating proximally to a retracted position of the blade; and the control assembly being operable to cause the motor to automatically retreat the drive part to place the blade in the retracted position of the blade and, thereafter, automatically remove power from the motor to stop any further proximal movement of the drive part.
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Specification